Your aim in this game is to direct the submarine through all the obstacles from the start of the map to the end of the map, to move the submarine forwards and backwards you use 4 and 6 or the d-pad and to move it up and down you use 2 and 8 or the d-pad, be careful not to go too fast because if you hit the wall or obstacles at speed it will cost you a life also if you are hit by a mine it will cost you a life, you only get 3 lives so make them count!